Journal Articles / book publications

Schreier J., Bröckel U.: Mehrdimensionale selektive Umbenetzungsagglomeration – Bestimmung der Reinheit von Graphitagglomeraten, Chemie-Ingenieur-Technik 95, 1-7, 2023, DOI:

Stiefelmaier, J., Strieth, D., Schaefer, S., Wrabl, B., Kronenberger, D., Bröckel, U., Ulber, R.: A new easy method for determination of surface adhesion of phototrophic biofilms. Biotechnology and Bioengineering (2023).  DOI:

Scherer, K., Soerjawinata, W., Schaefer, S., Kockler, I., Ulber, R., Lakatos, M., Bröckel, U., Kampeis, P., Wahl, M.: Influence of wettability and surface design on the adhesion of terrestrial cyanobacteria to additive manufactured biocarriers. Bioprocess Biosyst Eng (2022). DOI:

Judith Stiefelmaier and Susanne Schaefer, Dorina Strieth, Jens Weiermüller, Jakob Walther, Jonas Chodorski, Ulrich Bröckel, Roland Ulber: Cover Picture ChemBioEng Reviews 1/2022, February 2022 Vol.9(1) DOI:

Schaefer S., Walther J., Strieth D., Ulber R., Bröckel U.: Insights into the Development of Phototrophic Biofilms in a Bioreactor by a Combination of X-ray Microtomography and Optical Coherence Tomography; Microorganisms 2021, Volume 9, Issue 8, DOI: 10.33990/microorganisms9081743

Schreier J., Bröckel U.: Multidimensional separation due to selective spherical agglomeration – Evidence of shape separation via X-ray microtomography, Particuology 58, 316-323, 2021, DOI:

Schreier J., Furat O., Cankaya M., Schmidt V., Bröckel U.: Automated Evaluation of Contact Angles in a Three-Phase-System of Selective Spherical Agglomeration, Image Analysis & Stereology 39, 179-188, 2020. DOI:


Kozhar S., Dosta M., Antonyuk S., Heinrich S., Bröckel U.: DEM simulations of amorphous irregular shaped micrometer-sized titania agglomerates at compression, Advanced Powder Technology 26, 767–777, 2015

Vallatos A., Kirsch R.M., Williams R.A.,Hammond R.B., Jia X., Bröckel U., Britton M.M: Probing Composition and Molecular Mobility in Thin Spherical Films Using Nuclear Magnetic Resonance Measurements of Diffusion, Industrial & Engineering Chemistry Research, vol. 54, no. 26, pp. 6825–6830, 2015.

Gilson L., Bröckel U.: Einsatz von Bilderkennung zur Auswertung tomographischer Aufnahmen für die Erfassung vom Partikelformen, Chemie-Ingenieur-Technik 87, 896-990, 2015

Gilson L., Kozhar S., Antonyuk S., Bröckel U., Heinrich S.: Contact models based on experimental characterization
of irregular shaped, micrometer-sized particles, Granular Matter 16, 313-326, 2014

Bröckel U., Meier W., Wagner G., eds. Product Design and Engineering: Formulation of Gels and Pastes. John Wiley & Sons, 2013.

Roman M. Kirsch, Richard A. Williams, Ulrich Bröckel, Robert B. Hammond, and Xiaodong Jia: Direct Observation of the Dynamics of Bridge Formation between Urea Prills, Ind. Eng. Chem. Res. 50(20), 11728–11733, 2011

Brendel L., Török J., Kirsch R., Bröckel U.: A contact model for the yielding of caked granular materials, Granular Matter 13, 777-786, 2011

Kirsch R., Bröckel U., Brendel L., Török J.: Measuring tensile, shear and torsional strength of solid bridges between particles in the millimeter regime, Granular Matter 13, 517–523, 2011

Peda S., Bröckel U., Ay P., Stollberg C.: Anwendbarkeit der Lasermessverfahren FBRM und 3D ORM SMF in Batch-Kristallisationen, Chemie-Ingenieur-Technik 83, 558-562, 2011

Bröckel, U., Kirsch R., Wahl M., Feise H.J.: Formation and Strength of Solid Bridges in Bulk Solids. Particulate Science and Technology 26(1), 23­32, 2008

Wahl M., Bröckel U., Brendel L., Feise H.J., Weigl B., Röck M., J. Schwedes, Understanding Powder Caking: Predicting Caking Strength from Individual Particle Contacts, Powder Technology 188(2), 147, 2008

Bröckel U., Meier W., Wagner G., eds. Product Design and Engineering (2 Volumes). John Wiley & Sons, 2007.

U. Brö̈ckel, M. Wahl, R. Kirsch, and H.J. Feise. Formation and growth of crystal bridges in bulk solids. Chemical Engineering & Technology, 29(6):691–695, 2006

M. Wahl, R. Kirsch, U. Bröckel, S. Trapp, and M. Bottlinger. Caking of urea prills. Chemical Engineering & Technology, 29(6):674–678, 2006.

M. Wahl. Untersuchung zum Verbackungsverhalten von Zwei-Partikel-Systemen unter realen Lagerbedingungen. PhD thesis,Technical University Kaiserslautern, 2006.

Bröckel, U., Wahl M., Kirsch R., Feise H.J.: Bildung und Wachstum von Feststoffbrücken, Chemie Ingenieur Technik, 78(6):734, 2006.

Bröckel U., Beilharz H.: Untersuchung der Mikrostruktur und Kompressibilität von Paracetamol Granulaten, Produktgestaltung in der Partikeltechnologie, Band 3: 463­465, 2006

Wahl, M., Kirsch R., Bröckel U., Trapp S., Bottlinger M.: Verbacken von Harnstoff­Prills. Chemie Ingenieur Technik, 78(6):743­746, 2006

Bröckel U., Hahn C.: Product Design of Solid Fertilizers, Chemical Engineering Research and Design, 82(A11), 1453­1457, 2004

Bröckel U.: Herstellung von mikrostrukturierten Agglomeraten durch Umbenetzungs­agglomeration, Produktgestaltung in der Partikeltechnologie, Band 1: 187­195, 2002

Presentations at national and international conferences

Schreier J., Bröckel U.: The Morphology of Graphite Agglomerates During the Spherical Agglomeration Process, Partec, Nürnberg, 2023

Schreier J., Bröckel U.: Morphological Study of Microagglomerates Obtained by Spherical Agglomeration Using X-ray Microtomography, WCPT 9, Madrid, 2022

Schaefer S.; Walther J., Strieth D., Ulber R., Bröckel U.: Investigation of the Growth Pattern of T. distorta using Microcomputed Tomography, Himmelfahrtstagung DECHEMA, Online Event, 2021

Schreier J., Bröckel U.: Multidimensional Material Separation due to Selective Spherical Agglomeration, ECCE 13, Online Event, 2021

Schreier J., Bröckel U.: Selective Agglomeration of Graphite in a Heterogeneous Suspension – Effect of Contact Angle, Partec, Nürnberg, April 2019

Stein O., Bröckel U., Hansen H.: High Pressure Melt Atomization for Particle Generation using Common-Rail Technology, 5th International Conference on Spray Deposition and Melt Atomization, SDMA 2013, Bremen, September 2013

Kirsch R., Williams R.W., Bröckel U., Hammond R.B., Jia X.: Bridge formation between urea prills by mass transfer following water adsorption below the critical relative humidity, World Congress Chemical Engineering, WCCE9, Seoul, South-Korea, August 2013

Gilson L., Kozhar S., Antonyuk S., Heinrich S., Bröckel U. Hammond R., Jia X.: Studying the dynamics of water absorption into maltodextrin using single particles in the micrometer regime, Partec 2013, Nürnberg, April 2013

Gilson L., Bröckel U. Hammond R., Jia X.: Improved, fast characterizing of single particle shapes including pores using XMT scan of bulk material, Partec 2013, Nürnberg, April 2013

Gilson L., Bröckel U., Kozhar S., Antonyuk S., Heinrich S.: Experimentally calibrated contact models for micrometer-sized particles, 7th International Conference for Conveying and Handling of Particulate Solids, Friedrichshafen, September 2012

Kirsch R., Bröckel U.: Effect of climatic conditions on material properties of formulated products, 8th European Congress of Chemical Engineering, Berlin, September 2011

Kirsch R., Bröckel U., Brendel L., Török J.: New Method for Measuring tensile, shear and torsional strength of solid bridges between particles, 5th International Granulation Workshop, Lausanne, Schweiz, Juni 2011

Bröckel U., Kirsch R.: Mechanical Properties of Formulated Products – Single Particle Tester, 8th World Congress of Chemical Engineering, Montreal, Kanada, August 2009

Bröckel U.: Modeling of Temperature Increase of Tablets During Compression, Particulate Processes in the Pharmaceutical Industry II, Rio Grande, Puerto Rico, Februar 2008

Kirsch R., Bröckel U., Feise H.J., Untersuchungen zur Verbackung von Harnstoffprills, Processnet Jahrestagung 2012, Aachen, Oktober 2007

Bröckel U., Beilharz H.: Effect of the Microstructure of Paracetamol Granules on Tablet Properties, European Congress of Chemical Engineering – 6, Vol. 1, 1032, Copenhagen, Dänemark, September 2007

Bröckel U., Wahl M., Kirsch R., Feise H.: Formation and Growth of Crystal Bridges in Bulk Solids, 5th World Congress on Particle Technology, Orlando, Florida, April 2006

Röck M., Schwedes J., Wahl M., Bröckel U.: Caking behaviour of bulk solids determined with macro scale experiments, 8th Int. Conf. on Bulk Materials Storage, Handling and Transportation, Wollongong, Australia, 2004

Bröckel U.: Spherical agglomeration of heavy metal hydroxides, 7th International Symposium on Agglomeration Seite 2,Vol.2, P647-653, Albi, Mai 2001

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